<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        class user{
            get(){
                console.log(this.name+"get...");
            }
        }
        class admin{
            constructor(params) {
                this.name=params;
            }
            show(){
                console.log(this.name+"show...");
            }
        }
        //原型的继承
        admin.prototype=user.prototype;

        //new 对象
        let a=new admin("唐玮");
        a.show();
        console.dir(admin);
    </script>
</body>
</html>